Fixed sound effects on windows so now you can start a single sound effect multiple times

(up to the max allocated channels which is now 16, was 8 before)
Removed template function implementations into include file, from now on I don't want to see any template function implementation into header files.
Merge branch 'master' of https://github.com/Syvion/StarEngine into Syvion-develop
quick hotfix, read comment on commit '10da1306d6b804894c8f3e93e64a78266d1de29f'